}
if (!empty($_POST['step'])) {
    $step = $_POST['step'];
} else {
    $step = 'get_contacts';
}
$ers = array();
$oks = array();
$import_ok = false;
$done = false;
if ($_SERVER['REQUEST_METHOD'] == 'POST') {
    if ($step == 'get_contacts') {
        if (empty($_POST['email_box'])) {
            $ers['email'] = "Email missing !";
        } else {
            $provider = $inviter->getPluginByDomain($_POST['email_box']);
            if (!empty($provider)) {
                if (isset($oi_services['email'][$provider])) {
                    $plugType = 'email';
                } elseif (isset($oi_services['social'][$provider])) {
                    $plugType = 'social';
                } else {
                    $plugType = '';
                }
            } else {
                $ers['email'] = "Email missing !";
            }
        }
        if (empty($_POST['password_box'])) {
            $ers['password'] = "******";
        }